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The cerebrum is derived from the embryonic telencephalon The cerebrum is divided into left and right cerebrum hemispheres. The corpus callosum is the major connection between the two hemispheres. The left hemisphere is primarily responsible for the right side of the body. The right hemisphere is primarily responsible for the left side of the body. Cerebral cortex: outer covering of gray matter. Neocortex: region unique to mammals. The more convoluted the surface of the neocortex the more surface area the more neurons. Basal nuclei: internal clusters of nuclei.

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Lateralization of Brain Function. The left hemisphere. Specializes in language, math, logic operations, and the processing of serial sequences of information, and visual and auditory details. Specializes in detailed activities required for motor control. The right hemisphere. Specializes in pattern recognition, spatial relationships, nonverbal ideation, emotional processing, and the parallel processing of information.

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The brain exhibits plasticity of function. For example, infants with intractable epilepsy may have an entire cerebral hemisphere removed.The remaining hemisphere can provide the function normally provided by bot h

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The epithalamus, choroid plexus and the pineal gland thalamus, and hypothalamus are derived from the embryonic diencephalon. Thalamus. Relays all sensory information to the cerebrum. Contains one nucleus for each type of sensory information. Relays motor information from the cerebrum. Receives input from the cerebrum. Receives input from brain centers involved in the regulation of emotion and arousal. Hypothalamus. Regulates autonomic activity. Contains nuclei involved in thermoregulation, hunger, thirst, sexual and mating behavior, etc. Regulates the pituitary gland.

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Midbrain. Develops from the mesencephalon Contains nuclei involved in the integration of sensory information. visual reflexes & auditory reflexes. Relays information to and from higher brain centers Cerebellum.Develops from part of the metencephalon. Relays sensory information about joints, muscles, sight, and sound to the cerebrum. Coordinates motor commands issued by the cerebrum Pons. Develops from part of the metencephalon Contains nuclei involved in the regulation of visceral activities such as breathing. Relays information to and from higher brain centers Medulla oblongata. Develops from the myelencephalon Contains nuclei that control visceral (autonomic homeostatic) functions. Relays information to and from higher brain centers